Numerical Study of Distribution of Electric Field and Carrier Concentration in Luminescent Layer of Organic Light-Emitting Devices
有机电致发光器件发光层中电场与载流子浓度分布的数值研究

The electrical potential,field and carrier density in emission layer of single layer organic light-emitting devices are numerically studied based on the trapped charge limited conduction theory.The electric field increases rapidly near the two electrodes,while slowly and nearly lineally in the rest regions.The most charge carriers distribute near the two electrodes and only a small amount of them distribute over the rest region.The diffusion current is the dominant component near the injection electrode,whereas the drift current dominates the rest region of the emission layer.